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Abstract

Microbial desulphurisation is a technique for cleaning coals before burning. For the treatment of low sulphur coals, an earlier study concluded that the process might be a realistic option for desulphurisation. This research was extended to study the possibility of using the process for the treatment of high sulphur coals. Due to the heat production from the oxidation of pyrite, the temperature of a reactor system treating high sulphur coal will rise to a level that is too high for mesophilic bacteria. As cooling of the reactor systems is expensive, the use of thermophiles instead of mesophilic bacteria might be an attractive alternative. The microbial depyritisation of coal by means of moderately thermophilic pyrite-oxidising bacteria is technically feasible. However, there are some risks associated with the process (jarosite formation, fragility of the microbial culture) which might give rise to problems earlier than in the case of a process with mesophilic bacteria. A cost analysis for the treatment is presented

Additional information

Authors: BOOGERD F C, Delft University of Technology, Kluyver Laboratory of Biotechnology, Delft (NL);BOS P, Delft University of Technology, Kluyver Laboratory of Biotechnology, Delft (NL);HUBER T F, Delft University of Technology, Kluyver Laboratory of Biotechnology, Delft (NL);BOON M, Delft University of Technology, Kluyver Laboratory of Biotechnology, Delft (NL)
Bibliographic Reference: EUR 13453 EN (1991) 164 pp., MF, ECU 8
Availability: (2)
Record Number: 199110340 / Last updated on: 1994-12-02
Category: PUBLICATION
Original language: en
Available languages: en